Comment 2 for bug 1658370

Looks like the problem is that 69.195.146.38 (our VPS) does not have a PTR record pointing to mixxx.org. I've asked Garth if his VPS provider supports PTR records. I don't think all email is getting rejected, just some mail servers that check rDNS.

Here are the mail servers we seem to be dropping from the most (going back to January 8)
      2 idcmail-mx1so.cg.shawcable.net
      2 idcmail-mx2no.cg.shawcable.net
     24 mailin-01.mx.aol.com
     24 mailin-02.mx.aol.com
     24 mailin-03.mx.aol.com
     24 mailin-04.mx.aol.com
      4 mx00.emig.gmx.net
      4 mx00.gmx.net
      1 mx00.mail.com
      4 mx01.emig.gmx.net
      4 mx01.gmx.net
      1 mx01.mail.com
      1 mx.bt.lon5.cpcloud.co.uk
      5 mx-ha02.web.de
      5 mx-ha03.web.de
      2 mx.talktalk.net
      4 smtp.glb.shawcable.net